Euphorbia cornigera (horned spurge) is a species of flowering plant in the family Euphorbiaceae, native to Bhutan. It is a rhizomatous herbaceous perennial growing to 75 cm (30 in) tall, rarely 1 m (3 ft 3 in), with narrow green leaves with a pale green spine. Acid yellow flowerheads (cyathia) are borne in summer.
All parts of the plant are highly toxic if ingested, and the sap may cause skin irritation.
- RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. pp. 1136. ISBN 1405332964.